It was not until 1937 when Southern source of the Nile River was discovered. A. was B. until C. the D. when

36/90

It was not until 1937 when Southern source of the Nile River was discovered.

was

until

the

when

Giải thích

Kiếnthức: Cấutrúccâu“Itwasnot until… that …”

Giải thích:Cấutrúc"It is/wasnot until..."phải nối vớimệnhđềtheosaubằng"that"khôngdùng"when".when =>that

Tạmdịch:Mãi đếnnăm 1937, nguồn sôngNileởphíaNam đượcpháthiện.

Đáp án: D